Fabian
Castaneda.
IT systems engineer in Orange County, California. I specialize in workflow automation and internal tooling: 8 production automations in Python, Node.js, and PowerShell that replaced manual, ticket-driven work across IT, Finance, Analytics, and Marketing — plus AI/LLM agents in daily company-wide use.
The pattern behind all of it: find the repetitive, error-prone process, understand why it breaks, then engineer it away. FCDevelopments is where that work shows up publicly — real implementations, published as templates anyone can fork and run.
Fabian Castaneda — Operator5
Years in IT
8
Automations
17+
Public Repos
1
Gold Medal
precision()
Precision First
Every tool should work exactly as expected. No guesswork, no ambiguity, no wasted time. I obsess over the details so users don't have to.
failLoudly()
Fail Loudly, Never Silently
Good automation assumes things will go wrong. Stale inputs get rejected, bad rows get quarantined, and failures alert a human — a silent wrong answer is worse than a loud crash.
ship()
Ship Real Products
Ideas are cheap. I ship tools that solve actual problems for real people — then iterate based on what production tells me.
IT Services SpecialistNewport Beach, CA
- ▸Design and run 8 production automations spanning lifecycle automation, ticket reporting, expense processing, asset reconciliation, and media transcription.
- ▸Spearhead company AI initiatives: an LLM agent integrated with Salesforce, semantic models, and automated AI reporters in daily company-wide use.
- ▸Administer Okta provisioning and application assignment; site administrator for Jira, Box, ClickUp, RingCentral, and Loom.
- ▸Defined the team-wide standard stack for internal web apps — React + TypeScript, Node.js/Express, Entra ID OAuth2/OIDC SSO, Docker.
IT AdministratorSanta Ana, CA
- ▸Sole IT owner: established MDM/MAM infrastructure across 50+ devices and managed the full device lifecycle for onboarding and offboarding.
- ▸Built a monitoring tool that surfaced a critical ERP defect corrupting customer-support data — presented findings to the CEO, driving a vendor fix.
- ▸Created Zendesk macros and data-extraction automations that streamlined the after-call workflow by more than 30%.
IT Support EngineerAnaheim, CA
- ▸Resolved 40+ daily Tier 2/3 tickets spanning networks, payment terminals, and web platforms.
- ▸Oversaw E2EE and tokenization across 200+ payment devices at 100% security-standard compliance.
- ▸Configured and deployed payment terminals and gateways for 100+ clients nationwide.
Desktop TechnicianCerritos, CA
- ▸Performed weekly field repairs and replacements on Dell and HP laptops and desktops — motherboards, palm rests, keyboards, LCDs, batteries, power supplies, drives, RAM, and graphics cards.
- ▸Managed a full daily repair schedule across diverse customer sites, holding a 95% satisfaction rate through timely repairs and support.
- ▸Trained colleagues on break/fix procedures so the whole team could deliver consistent hardware support.
A.S. Computer Information Systems (CIS)Irvine, CA
- ▸SkillsUSA California Regional Gold Medal — Web Design & Development.
- ▸Google Foundations of Cybersecurity Certificate — Python, Bash, SQL, Linux, SIEM.
